ALB · AWS Cert DevPro

AWS SOA-C02 Drill: Auto Scaling Health Checks - Diagnosing Load Balancer Failures

15 June 2025·684 words·4 mins

Analyzing the diagnosis of EC2 instance health check failures behind ALB in an Auto Scaling group for reliable operations.

1 June 2025·783 words·4 mins

Certification Drills AWS SOA-C02 CloudFront ALB User-Agent Header

Analyzing a scenario where mobile users receive desktop website content due to missing User-Agent headers in CloudFront distribution.

1 June 2025·850 words·4 mins

Certification Drills AWS DVA-C02 ALB OIDC Authentication

Analyzing how to secure a public website behind OIDC authentication without modifying the application code.

15 March 2025·755 words·4 mins

Certification Drills AWS DVA-C02 ALB Amazon Cognito Authentication

Analyzing the best approach to secure an internet-facing ALB-backed web API with Amazon Cognito authentication.

24 January 2025·1241 words·6 mins

Analyzing the critical difference between availability zones and instance scaling to achieve true high availability in production environments.

15 January 2025·573 words·3 mins

Certification Drills AWS DVA-C02 ALB X-Forwarded-For

Analyzing the HTTP header needed to correctly capture client IP patterns from requests routed through an Application Load Balancer.